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Statistics - Coggle Diagram

- - - - Refers to the small part of the population that is used for study
      - Total amount of things in a sample is called Sample Size
  - - - Quantitative data
        
        Data that contain numbers and can be used for arithmetical calculations
        
        Quantitative data is derived from quantitative variables
        
        two types of quantitative Variables
        
        Discrete Variable
        
        Refers to variable that can be measured only in by certain numbers
        
        Example: Number of pets you own
        
        This can be only in whole numbers
        
        1 more item...
        
        Continuous Variable
        
        Refers to variables that can take on any numerical value
        
        example : your weight
        
        This can 75kgs or 75.585Kgs
      - Categorical data
        
        Refers to values that place things into groups or categories
        
        Categorical data is derived from categorical variables
        
        Two type of Categorical variables
        
        Categorical and Ordinal
        
        Data that has a logical order
        
        Example : Alphabetical grades
        
        Categorical and Nominal
        
        Data that doesn't have logical ordering to the values
        
        Example: hair colour
- - - - often use histograms and graphs to summarise descriptive statistics
        
        eg: Mid term marks average is 76%